Feng Shui Precipitation in Summer in South Asia

The cause of the southwest monsoon: the southeast trade wind in the Indian Ocean, after crossing the equator, turns southwest under the influence of the earth's rotation deviation, crosses the tropical ocean and carries a lot of water vapor, which is the main source of precipitation in the Indian Peninsula and Southeast Asia. Passing eastward through the Indian Peninsula and the Bay of Bengal can affect the southern part of China; When the southwest monsoon develops strongly, it can also go deep into the Yangtze River basin.

Causes of northeast monsoon: strong continental cold high pressure in autumn and winter in the northern hemisphere occupies Mongolia and Siberia, the wind direction in North China is northwest, Central China turns to true north, and South China turns to northeast under the action of high pressure gradient and Coriolis force.

Extended data

Regional characteristics:

The monsoon region has a unique climate, and most of the precipitation comes from the prevailing summer monsoon. In ancient China, the use of monsoon to carry out navigation activities made brilliant achievements. Zheng He set sail for the first time in summer and returned in autumn in Ming Dynasty. The other six times set sail during the northeast monsoon in winter and returned during the southwest monsoon. This fully shows that the ancients had a profound understanding of the law of wind activity.

Due to the different degrees of heating and cooling between the mainland and the ocean in a year, the direction of a large range of winds between the mainland and the ocean changes regularly with the seasons, which is called monsoon. The most fundamental reason for the formation of monsoon is due to the different properties of the earth's surface and different thermal responses. Due to land and sea distribution, atmospheric circulation, large terrain and other factors, headwinds prevail in winter and summer with a one-year cycle.

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Baidu encyclopedia-northeast monsoon

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